Electrolyte suction device of soft package battery

Abstract

The utility model provides an electrolyte suction device of a soft package battery, which comprises a fitting groove used for fitting the surface of the soft package battery, a puncturing component used for puncturing the surface of the soft package battery is movably arranged in the fitting groove, and an electrolyte collection component used for collecting electrolyte is arranged at one end of the fitting groove. The liquid collecting assembly comprises a negative pressure drainage device with two negative pressure hoses and a negative pressure source. The puncturing assembly punctures the aluminum plastic film of the soft package battery, and the flowing electrolyte is collected in the negative pressure drainage device under the action of negative pressure, so that the whole device can simply, conveniently and safely recycle the electrolyte in the soft package battery, and the testing requirements of a single battery in a laboratory are met.

Description

Technical Field

[0001] The utility model relates to the technical field of battery component recycling, in particular to an electrolyte suction device for a soft-pack battery. Background Art

[0002] Structural composition of a soft-pack battery:

[0003] Positive electrode and negative electrode: Used to provide the movement of lithium ions during charge and discharge.

[0004] Electrolyte: Used to provide a transmission channel for lithium ions and ensure the free movement of lithium ions between the positive and negative electrodes.

[0005] Separator: Separates the positive electrode and the negative electrode to prevent internal short circuit of the battery, and at the same time allows lithium ions to pass through.

[0006] Aluminum-plastic film: As the outer package of the battery, it has good sealing performance, flexibility and mechanical strength, preventing electrolyte leakage and external pollution.

[0007] Current collector: Collects and conducts current, enabling the current inside the battery to be smoothly output.

[0008] Label and protection circuit: Includes overcharge protection, over-discharge protection, short-circuit protection, etc., to ensure the safe use of the battery.

[0009] During the use of a soft-pack battery, as the number of charge-discharge cycles increases, the electrolyte inside the battery will gradually be depleted, affecting the battery performance. In order to analyze and improve the battery performance, especially in a laboratory environment, it is often necessary to collect and detect the electrolyte of a single soft-pack battery after cycling. However, most of the existing technologies for collecting the electrolyte of a soft-pack battery after cycling still remain at large-scale recycling on the production line, and it is impossible to use the instruments for recycling the electrolyte on the production line for recycling. Currently, the recycling of the electrolyte of a small soft-pack battery after cycling is relatively complicated, and the electrolyte may be contaminated by impurities due to improper operation.

[0010] In view of this, the inventor specifically designed an electrolyte suction device for a soft-pack battery, and this case was thus generated. Content of the Utility Model

[0011] (1) Technical problems to be solved

[0012] The purpose of this application is to provide an electrolyte suction device for a soft-pack battery, which solves at least the problems of cumbersome electrolyte recycling, high cost, and easy contamination of the electrolyte in the prior art.

[0013] (2) Technical solutions

[0014] To solve the above technical problems, the utility model provides the following technical solutions:

[0015] The present application provides an electrolyte suction device for a soft-pack battery, including a fitting groove for fitting on the surface of the soft-pack battery. A puncturing assembly for puncturing the surface of the soft-pack battery is movably arranged in the fitting groove, and a liquid collecting assembly for collecting the electrolyte is arranged at one end of the fitting groove.

[0016] In a further aspect, the puncturing assembly includes a push plate, and a plurality of conical puncturing blocks are fixedly arranged on the push plate. A connecting column is clamped on the end face of the push plate away from the puncturing blocks, and a pressing block is fixedly arranged at one end of the connecting column; a guiding tube for guiding the movement of the connecting column is arranged on the fitting groove.

[0017] In a further aspect, the pressing block is in the shape of a flat circle, and the symmetrically two ends are upturned to form a lifting part, and the middle is recessed to form a pressing part for pressing.

[0018] In a further aspect, a cross plate for positioning and fitting the fitting groove is arranged below the fitting groove and extends towards the soft-pack battery.

[0019] In a further aspect, an arc groove for collecting the electrolyte is arranged on the cross plate, and a connecting tube for connecting the liquid collecting assembly is arranged at the bottom of the arc groove.

[0020] In a further aspect, the liquid collecting assembly includes a negative pressure drainer with two negative pressure hoses and a negative pressure source. One negative pressure hose of the negative pressure drainer is connected to the connecting tube, and the other negative pressure hose of the negative pressure drainer is connected to the negative pressure source.

[0021] In a further aspect, the material of the puncturing block is ceramic.

[0022] In a further aspect, a soft rubber is arranged on the end face of the fitting groove in contact with the soft-pack battery.

[0023] In a further aspect, the negative pressure source is a manual pump.

[0024] (III) Beneficial effects

[0025] The utility model has the following beneficial effects compared with the prior art:

[0026] The fitting groove is tightly adhered to the surface of the soft-pack battery through the soft rubber. The aluminum-plastic film of the soft-pack battery is punctured by the puncturing assembly, and the flowing-out electrolyte is collected into the negative pressure drainer under the action of negative pressure. The whole process reduces the interaction with the external air, as much as possible avoids impurity pollution, and the whole device has a simple structure, low cost, and simple and easy-to-understand operation.

[0027] The following further describes in detail the specific embodiments of the utility model with reference to the accompanying drawings. Description of the drawings

[0028] In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the usage scenario of the present utility model;

[0030] Figure 2 This is a schematic diagram of the overall structure of the present utility model Figure 1 ;

[0031] Figure 3 This is a schematic diagram of the overall structure of the present utility model Figure 2 ;

[0032] Figure 4 This is an exploded view of the present utility model Figure 1 ;

[0033] Figure 5 This is an exploded view of the present utility model Figure 2 ;

[0034] Figure 6 This is a schematic diagram of the overall structure of the puncturing assembly of the present utility model.

[0035] Explanation of the reference numerals in the figure: 1, fitting groove; 11, guide tube; 2, puncturing assembly; 21, push plate; 22, puncturing block; 23, connecting column; 24, pressing block; 241, lifting part; 242, pressing part; 3, liquid collecting assembly; 31, negative pressure hose; 32, negative pressure drainer; 33, negative pressure source; 4, cross plate; 41, arc groove; 42, connecting pipe; 5, soft rubber; 6, soft-pack battery. Detailed implementation manners

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model.

[0037] As shown in FIGS. 1 and Figure 2 The present utility model provides an electrolyte suction device for a soft-pack battery 6, including a fitting groove 1 for fitting on the surface of the soft-pack battery 6. A puncturing assembly 2 for puncturing the surface of the soft-pack battery 6 is movably arranged in the fitting groove 1. Just by fitting the fitting groove 1 on the surface of the soft-pack battery 6, the battery surface can be punctured through the puncturing assembly 2, which is simple and convenient, with fewer operation steps and reduced operation difficulty. One end of the fitting groove 1 is provided with a liquid collecting assembly 3 for collecting the electrolyte. It can effectively collect the electrolyte and avoid the problem of low electrolyte recovery efficiency in the traditional method. By the combined use of the negative pressure drainer 32 and the negative pressure source 33, the collection efficiency of the electrolyte is further improved.

[0038] Figure 5 and Figure 6As shown in the figure, the puncturing assembly 2 includes a push plate 21. A number of conical puncturing blocks 22 are fixedly arranged on the push plate 21. A connecting column 23 is snap-fitted on the end face of the push plate 21 away from the puncturing blocks 22. A pressing block 24 is fixedly arranged at one end of the connecting column 23. A guiding tube 11 for the guiding movement of the connecting column 23 is provided on the fitting groove 1. The puncturing blocks 22 in the puncturing assembly 2 are made of ceramic material, which has high hardness and corrosion resistance, and can ensure that no debris is generated when puncturing the surface of the battery, reducing the risk of contaminating the electrolyte. Another function of the guiding tube 11 is to limit the excessive penetration of the puncturing assembly 2 into the soft-pack battery 6. When one end of the guiding tube 11 abuts against the pressing block, it can no longer move to puncture the surface of the battery.

[0039] In addition, a soft rubber 5 is provided on the end face of the fitting groove 1 in contact with the soft-pack battery 6, which can improve the fitting tightness, prevent electrolyte leakage, and ensure the safety of the operation.

[0040] As Figure 3 and Figure 4 shown in the figure, in order to make the entire pressing process smooth and facilitate the separation of the puncturing blocks 22 from the soft-pack battery 6, the pressing block 24 is in the shape of an oblate body, and the symmetric two ends are upturned to form a lifting part 241, and the middle is recessed to form a pressing part 242 for pressing. Applying force to the pressing part 242 with fingers can complete the puncturing action. Hooking the two fingers on the lifting part 241 can quickly and labor-savingly separate the puncturing blocks 22 from the soft-pack battery 6.

[0041] As Figure 2 and Figure 4 shown in the figure, a transverse plate 4 for positioning is extended and arranged below the fitting groove 1. Just by abutting the transverse plate 4 against the bottom of the soft-pack battery 6, the entire puncturing assembly 2 can accurately perform the puncturing work in the specified area. An arc groove 41 for electrolyte collection is provided on the transverse plate 4. After puncturing, the electrolyte first drips due to gravity and converges into the arc groove 41, and is connected to the liquid collection assembly 3 through a connecting pipe 42, ensuring that the electrolyte can be accurately introduced into the liquid collection assembly 3 to avoid waste and pollution.

[0042] As Figure 1 and Figure 2 shown in the figure, the liquid collection assembly 3 includes a negative pressure drainer 32 with two negative pressure hoses 31 and a negative pressure source 33. One negative pressure hose 31 of the negative pressure drainer 32 is connected to the connecting pipe 42, and the other negative pressure hose 31 of the negative pressure drainer 32 is connected to the negative pressure source 33. The whole structure is compact and small in size. Using a manual pump as the negative pressure source 33 is convenient for carrying and on-site operation, and is especially suitable for the recovery and detection of the electrolyte of a single soft-pack battery 6 in a laboratory environment. The negative pressure drainer 32 also serves as a storage device for the electrolyte. The negative pressure source 33 is a manual pump, which is low in cost and convenient for laboratory and small-scale applications. At the same time, the device is simply designed, does not require a complex electrical control system, is easy to maintain, and is economical and practical.

[0043] The puncture block 22 is made of ceramic to avoid short circuit caused by contact with the battery cell. A soft glue 5 is arranged on the end surface of the fitting groove 1 that contacts the soft-pack battery 6 to provide further bonding and sealing.

[0044] The method of using this device is as follows:

[0045] First, discharge the soft-pack battery 6 to about 2.5V, remove the discharged soft-pack battery 6 and wipe the contact surface with alcohol. Tear off the protective film of the soft glue 5 on the surface of the bonding groove 1 of the device, and stick the soft glue 5 on the aluminum-plastic film of the soft-pack battery 6 (note that the puncture block 22 of the puncture component 2 must not overlap with the position of the battery cell. In order to avoid short circuit, the conical puncture block 22 is made of ceramic). Confirm that the soft glue 5 is completely close to the aluminum-plastic film and there is no leakage or air in the device. Connect the negative pressure source 33 and the negative pressure drain 32, push the pressing block 24 to make the puncture piece puncture the aluminum-plastic film and start the negative pressure source 33, and the electrolyte flows into the negative pressure drain 32. After standing for 10-20 minutes, remove the negative pressure drainage tube and put the soft-pack battery 6 and the device into the glove box. Finally, the soft glue 5 is torn off, and the soft-pack battery 6 is scrapped, and then the cycled battery electrolyte required for the experiment is obtained in the negative pressure drain 32.

[0046] In summary, the utility model provides a soft-pack battery 6 electrolyte absorption device with a simple structure and convenient operation. The device realizes effective puncture of the surface of the soft-pack battery 6 through the design of the bonding groove 1 and the puncture component 2, and efficiently collects the electrolyte through the liquid collection component 3. The puncture block 22 made of ceramic material is used in the device to improve the safety and durability of operation, and the soft glue 5 bonding groove 1 increases the sealing and avoids electrolyte leakage. The combination of the negative pressure drainer 32 and the manual pump makes the device have good portability and economy, which is particularly suitable for the electrolyte recovery needs in laboratory environments and has broad application prospects.

[0047] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An electrolyte absorption device for a soft-pack battery, characterized in that: It comprises a laminating groove (1) for laminating to the surface of a soft-pack battery, a puncturing component (2) for puncturing the surface of the soft-pack battery being movably arranged in the laminating groove (1), and a liquid collecting component (3) for collecting electrolyte being arranged at one end of the laminating groove (1); The piercing assembly (2) comprises a push plate (21), on which a plurality of conical piercing blocks (22) are fixedly arranged, and a connecting column (23) is clamped and arranged on the end surface of the push plate (21) away from the piercing blocks (22), and a pressing block (24) is fixedly arranged at one end of the connecting column (23); a guide tube (11) for guiding the movement of the connecting column (23) is provided on the fitting groove (1); The pressing block (24) is in the shape of an oblate body, with two symmetrical ends raised to form lifting portions (241), and a depression in the middle to form a pressing portion (242) for pressing; A horizontal plate (4) is provided below the bonding groove (1) and extends in the direction of the soft-pack battery, and is used for positioning and bonding the bonding groove (1); The horizontal plate (4) is provided with an arc groove (41) for collecting electrolyte, and the bottom of the arc groove (41) is provided with a connecting pipe (42) for connecting to the liquid collecting assembly (3); The liquid collection component (3) comprises a negative pressure drainer (32) having two negative pressure hoses (31) and a negative pressure source (33), wherein one negative pressure hose (31) of the negative pressure drainer (32) is connected to the connecting pipe (42), and the other negative pressure hose (31) of the negative pressure drainer (32) is connected to the negative pressure source (33); The puncturing block (22) is made of ceramic; The end surface of the bonding groove (1) in contact with the soft-pack battery is provided with soft glue (5); The negative pressure source (33) is a manual pump.

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